Apple Responds to Samsung's Galaxy S4 Launch with iPhone 5 Marketing

Samsung's Galaxy S4 has a 5-inch, 1080p display, a 13-megapixel camera, and a quad-core processor. It also has a number of new software features, including the ability to tilt the phone to scroll and wave your hand over it to swipe through photos or webpages. There's also its S Health app, which monitors fitness activity. The phone will be released in April, the company announced last week.

"Typically Apple has been able to offset the enthusiasm around competitors with its own products," Greengart said. "Right now there is a lull in Apple's introduction rate, so it is focusing on showing that its current product is superior."